ML18043B076
| ML18043B076 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/06/1979 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Bixel O CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 7910040068 | |
| Download: ML18043B076 (2) | |
Text
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Docket NRC SEP 6 1979 Local POR HSmi th OOiAnni JRBuchanan TERA.
ACRS(l6)
. Docket No~ -S0-255
- ORB#2 ROG NRR ROG OEisenhut RVo*llmer J
Mr. David Bixel Nu'clear Licensing Administrator Consumers Power Company 212 West Michigan Avenue "ackson, Mf c;:h f_gan 49201
Dear Mr. Bixel:
BGrim_es WGammi 11 JMil l er LShao TCarter
- OELD OI&E ( 3) *
- OLZi emanri RSilver.
- We have: reviewed your letters dated August 3, 1978 and February 2, 1979,
- on posf tfve df splacemerit charging pump vibrations.
1 The Palisades plant has added accumulator type pulsation dampeners on
- .each charging pump discharge side during.the period 1970-1972 to replace the original unsatisfactory mechanical dampeners.
As a resul_t of this
!110diffcatfon, system vibrations were reduced to ~cceptable level.
Field measurement made on August: 3,.1972 indfcat.ed the maximum peak to.
peak*vibratfori in the system.. was reduced to less than 3 mils.
In one.
specific *1ocation, the -max~mum peak t~ peak Vibration w.as reduced from 43 lllils to 0.3 mils.
No c;racks were -experienced sfnce.tha.t period.
'f" Based on,these measurements and perfonnance history, we concluded that peak alternating stresse~*fn the charging system piping is below the
- endurance 1 fmi t-and therefore, fatigue_ failure due*.to operation of po,sitive disp*lacement chargi_n_g pumps ar~ no_t anticipated..
c_c:.
See next page*
Sirycerely ~
Or_iginal Signed by:
Dennis L *. Z~emaBil.
Dennis t. Ziemann, Chief Operating Reactors Branch #2 Division of Operating Reactors NBC llQRM 318 (9-76) NRCM 0240
- u *** -aovBANMBNT PRINTING OP'PICB: 1171 -1*1 - 7~*
- )
"'°~£.,...__r Mr. David Bixel cc M. I. Miller, Esquire Isham, Lincoln & Beale Suite 4200 One First National Plaza Chicag9, Illinois 60670 Mr. Paul A. Perry, Sec,retary Consumers Power Compariy 212 West Michigan Avenue Jackson, Michigan 49201 Judd L. Bacon, E~quire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Myron M. Cherry, Esquire Suite: 4501 One IBM Plaza Chicago, Illinois 60611 Ms. Mary P. Sinclair Great Lakes Energy Alliance 5711 Summerset Drive Midland, Michigan 48640 Charles Bechhoefer, Esq., Chairman Atomic Safety and Licensing Board Panel U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Dr. George C. Anderson Department of Oceanography University of Washington Seattle, Wash~ngton 98195 Dr. M. Stanley Livingston 1005 Calle Largo Santa Fe, New Mexico 87501 Kala~azoo Public Library 315 South Rose Street Kalamazoo, Michigan 49006